[SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()

When we hot-plug in new cpus, the core_id and proc_id of existing
cpus can change.  So in order to set the cpu groups correctly we
need to clear the maps out completely first.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/smp.c

@@ -1244,6 +1244,7 @@ void __devinit smp_fill_in_sib_core_maps(void)
 	for_each_possible_cpu(i) {
 		unsigned int j;
 
+		cpus_clear(cpu_core_map[i]);
 		if (cpu_data(i).core_id == 0) {
 			cpu_set(i, cpu_core_map[i]);
 			continue;
@@ -1259,6 +1260,7 @@ void __devinit smp_fill_in_sib_core_maps(void)
 	for_each_possible_cpu(i) {
 		unsigned int j;
 
+		cpus_clear(cpu_sibling_map[i]);
 		if (cpu_data(i).proc_id == -1) {
 			cpu_set(i, cpu_sibling_map[i]);
 			continue;